gsauthof

/* Demonstrate how to remove an environment variable from /proc/$pid/environ,
   under Linux.
   This pseudo file is accessible by other processes with sufficient privileges
   (i.e. same user or root) and exposes the original environment vector.
   Removing sensitive variables from it can be part of a defense in depth
   strategy (i.e. to make it harder for a casual attacker to access it).
 */

/** {{{ MIT No Attribution

Integralist

There are two 'types' to be aware of with a quickfix window:

1. entry: the actual line content (e.g. :grep foo will show a specific line that matched within a file).
2. file: the actual file itself (e.g. the path to the file that contained the match).

To replace content using vim (via the quickfix window) you need to choose whether you want to apply the change via the quickfix 'entry' or via the 'file' as a whole.

If you use cdo, then your 'action' (i.e. how you're going to replace content) will be applied to every entry in the quickfix window.

If you use cfdo, then your action will be applied to each file in the quickfix window.

19317362

ELF

ELF Header

The first portion of any ELF file is the ELF header. This generally provides offsets to other headers (program headers and section headers) within an ELF.

typedef struct {
  unsigned char e_ident[EI_NIDENT];
 uint16_t e_type;

n1snt

Note

I’ve written a newer optimized 2026 version of this guide with a faster setup using Zinit + Starship and improved plugin loading.

This version avoids slow shell startups and works better with modern Zsh setups.

Updated guide: https://gist.github.com/n1snt/2cccc8aa5f7b645a7628d3512c70deb6

Oh my zsh.